vect-105.c: Prevent compiler from hoisting abort out of loop.

	* gcc.dg/vect/vect-105.c: Prevent compiler from hoisting abort
	out of loop.

From-SVN: r143378

gcc/testsuite/ChangeLog

+2009-01-14  Mark Mitchell  <mark@codesourcery.com>
+
+	* gcc.dg/vect/vect-105.c: Prevent compiler from hoisting abort
+	out of loop.
+
 2009-01-14  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/38826

gcc/testsuite/gcc.dg/vect/vect-105.c

@@ -16,6 +16,8 @@ static int a[N][N] = {{1,2,3,11},{4,5,6,12},{7,8,9,13},{34,45,67,83}};
 static int b[N][N] = {{17,28,15,23},{0,2,3,24},{4,31,82,25},{29,31,432,256}};
 static int c[N][N] = {{1,2,3,11},{4,9,13,34},{45,67,83,13},{34,45,67,83}};
 
+volatile int y;
+
 __attribute__ ((noinline))
 int main1 (int x) {
   int i,j;
@@ -28,7 +30,9 @@ int main1 (int x) {
      {
        p->a[i][j] = a[i][j];
        p->b[i][j] = b[i][j];
-       if (x == 135)
+       /* Because Y is volatile, the compiler cannot move this check out
+	  of the loop.  */
+       if (y)
 	 abort (); /* to avoid vectorization  */
      }
    }